if (document.images) {
				img1 = new Image
				img2 = new Image
				img3 = new Image
				img4 = new Image
				img5 = new Image
				nav_off = new Image
				 
				img1.src = "/images/nav_about.gif"
				img2.src = "/images/nav_filter_bags.gif"
				img3.src = "/images/nav_filter_media.gif"
				img4.src = "/images/nav_maintenance.gif"
				img5.src = "/images/nav_support.gif"
				
				nav_off.src = "/images/nav.gif"
			}